| Gender | Male |
|---|---|
| Height | 0' 0" |
| Weight Class | Lightweight |
Masashi Osako is a MMA fighter with a professional fight record of 1 wins, 2 losses and 0 draws
| Pro Record | 1-2-0 (Win-Loss-Draw) |
|---|---|
| Career Length | 1 year, 7 months, 2 days |
| Rounds Fought | 3.0 |
| Avg. Fights/Year | 1.9 |
| Longest Layoff | 10 months, 17 days |
| Quickest Turnaround | 8 months, 15 days |
| Date | Opponent | Weightclass | Method | Round | Time | |||
|---|---|---|---|---|---|---|---|---|
| NSF | 07/13/2025 | W (0-2-0) | Reio Fukuda (0-0-0) | LW | Decision (Unanimous Decision) Defeat | 2 | 05:00 | |
| NSF | 10/27/2024 | L (0-1-0) | Kenta Nakazato (0-0-0) | WW | TKO/RSC Bloom Fighting Championship 3 | 1 | 04:00 | |
| NSF | 12/10/2023 | L (0-0-0) | Yuki Mogi (4-1-0) | WW | Submission (Rear Naked Choke) Fighting Nexus 33 | 1 | 00:48 |
| * Bouts marked with an 'Official' logo denote results which have been verified by an ABC-recognized athletic commission * Bouts marked with an (*) are considered exhibition bouts and do not count towards the fighter's record * Weights marked with an (*) denote those over the limit for the weight class |